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  1. #1
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    New model g21 backing plate failure

    2nd vehicle with it, speed 3.75.New model g21 backing plate failure-20200728_170138_copy_1209x1612-jpg

  2. #2
    Super Member oneheadlite's Avatar
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    Re: New model g21 backing plate failure

    Unfortunate, no doubt, but it sounds like they know about the issue. I believe someone posted that's why the wide release has been pushed back.

    I'm sure they'll take care of you.

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  4. #3
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    Re: New model g21 backing plate failure

    I don't have experience with other brands. This and the old model worked pretty good for me. The new backing plate is made just different enough that the old style backing plate will not work. To bad, I have 2 of those.

  5. #4
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    Re: New model g21 backing plate failure

    Quote Originally Posted by Stlchucky View Post
    I don't have experience with other brands. This and the old model worked pretty good for me. The new backing plate is made just different enough that the old style backing plate will not work. To bad, I have 2 of those.
    It uses the newer Rupes style plate oblong vs round
    I'll check again and see if Makita plate is newer style or old

  6. #5
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    Re: New model g21 backing plate failure

    Thanks, it would be nice to have a backing plate for this one.
    I am thinking about a flex 3401 though.

  7. #6
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    Re: New model g21 backing plate failure

    Makita PO5000C is the old style, do won't work
    Rupes mark 2 and mark 3 plate will work

    Also Makita PO over the 3401
    3401 over the xce

  8. #7
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    Re: New model g21 backing plate failure

    Ok, got back from vacation today and my new backing plate was here.

    Looks like they added metal where the bolt passes thru the plate and maybe the harder grey plastic is a little thicker.

  9. #8
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    Re: New model g21 backing plate failure

    I still found the polisher to have a lot of vibration. I wonder if the updated BP fixed this?


    Sent from my iPhone using Tapatalk
    '03 Corvette Z06

  10. #9
    Super Member Bruno Soares's Avatar
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    Re: New model g21 backing plate failure

    Quote Originally Posted by WRAPT C5Z06 View Post
    I still found the polisher to have a lot of vibration. I wonder if the updated BP fixed this?


    Sent from my iPhone using Tapatalk
    Did you use the right spindle to match the weight of your pad? I saw on their YT channel people aren’t following the instructions and using the right one to make the counter weight work with the desired pad and then they notice excessive vibration.
    Bruno Soares


  11. #10
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    Re: New model g21 backing plate failure

    I never got back to ask you about the makita, why do you prefer it over flex?

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